Home / 81,016.24-121,495.20-34,272.40

Finding the Fourth Proportional to 81,016.24, 121,495.20 and 34,272.40

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Solution

The fourth proportional to 81,016.24, 121,495.20 and 34,272.40 is: 51,396.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,016.24 : 121,495.20 = 34,272.40 : x
  2. Step 2: Convert to fraction form
    81,016.24/121,495.20 = 34,272.40/x
  3. Step 3: Cross multiply
    81,016.24x = 121,495.20 × 34,272.40
  4. Step 4: Simplify right side
    81,016.24x = 4,163,932,092.48
  5. Step 5: Solve for x
    x = 4,163,932,092.48/81,016.24
  6. Step 6: Final answer
    x = 51,396.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.